416 JE jet

[python952]

Do any of you know how much a JE 416 pistion will change a jet size. I just rebuilt my motor and used a JE 416 10.8:1 pistion and crf 450 timing chain and need to know about how much the jet size will change from this. Thanks in advance

[hondamanex400]

stock i believe is a 145, and i have a 155 in mine, but my compression is 11:1, and i have 6 airbox lid jets., also, i am below 3000 feet

if you run with out the lid, or have a "powerlid", you will want to run a 170